| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat exchanger of brazing type that hardly gives off an offensive smell, suppresses the surface from turning water-repellent owing to sticking of a water-repellent substance even in the case where it is used in an environment in which the water-repellent material floats, and suppresses the water splashing phenomenon and aggregation of dew condensation water. <P>SOLUTION: The heat exchanger includes a tube body having a refrigerant flow passage and a fin material joined to the tube body with brazing using flux, and the tube body and the fin material have a base material made of aluminum or aluminum alloy, and a corrosion-resistant coating and a hydrophilic coating formed sequentially on the base material after joining by brazing, and the amount of the corrosion-resistant coating and the hydrophilic coating that are attached is 0.1 to 10 g/m<SP POS="POST">2</SP>. Further, it is preferable for the hydrophilic coating to contain slowly soluble components. <P>COPYRIGHT: (C)2013,JPO&INPIT |
